RU1787955C - Equipment for treatment of sewage - Google Patents

Abstract

Usage: biochemical treatment of wastewater containing organic matter. SUMMARY OF THE INVENTION: the device comprises a honeycomb tray (1) interlocked with a primary sump (2) and a secondary sump (3). On the horizontal shafts in each cell of the tray placed disk packs (4) made of plastic masses. From the rod (12) through the elastic suspension (13) to the ribs of the disks (4) graphite electrical panels are connected - contacts (14), which supply a positive potential to the disks. On the rod (15), graphite rods (16) are movably fixed, lowered into the water of the interdisk space, connected to the negative potential of the direct current source. As a result of electrolysis under the biofilm, atomic oxygen is released directly on the surface of the disks. 3 ill.

Description

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The invention relates to the biochemical treatment of foot water and can be used for the treatment of both domestic and industrial wastewater containing organic substances. wa.

A device is known in which, to increase the cleaning efficiency, aeration is carried out using oxygen, for the efficient use of which the drums rotating on the shafts have perforated disks, and the pressure inside the mesh tray is maintained by the difference in levels at the input and output.

A disadvantage of the known device is the low degree of oxygen uptake by the biofilm and, moreover, only its surface layers.

The purpose of the invention is to increase productivity and cleaning efficiency,

This goal is achieved by the fact that the biofilm from the disk side is affected by atomic oxygen generated as a result of electrolysis under the influence of direct current supplied + to biological disks, and to a graphite comb located in the interdisk space. The atomic oxygen released on the surface of the disks directly affects the biofilm from the side of its base, and the hydrogen released on the graphite comb helps to remove fats from the liquid, which also contributes to the cleaning efficiency.

Figure 1 shows a longitudinal section of a device; figure 2 is a longitudinal section of a cell tray with a package of disks; on Fig.Z is a top view of the tray tray.

The device comprises a honeycomb tray 1 with a pyramidal shape of cells. The tray is interlocked with a primary settler 2 and a secondary settler 3, which are containers containing a vertical wall not reaching the bottom with a lower edge, and discharge pipes at the bottom for periodic discharge of sediment. In each cell of the tray, disc packs 4 are made of plastic masses, for example, secondary nylon, polyethylene, etc. Reducer electric drives 5 rotate horizontal shafts 6 with discs 4. In the bottom of each cell there are aerators 7 connected to a compressed source air. The effluent enters the cell 8 located on the outer face of the primary sump 2, and the purified water is drained into the cell 9 located on the outer face of the secondary sump, and the effluents are discharged through the pipe.

Above the device there are direct current electric wires 10 - plus, 11 - minus, to which the rods are connected. From the rod 12 through the elastic suspension 13 to the edges of the disks 4, sliding graphite electrobrushes-contacts 14 are connected. On the rod 15, the graphite rods 16 are fixed, lowered into the cleaned drains and forming a comb located in the interdisk space. The device operates as follows.

Drains containing organic matter flow through cell 8 to the primary

sedimentation tank 2, in which solid particles settle to the bottom. The drains, freed from solid impurities, round the bottom of the vertical partition and enter the honeycomb tray 1 with rotating bags in it

discs 4 coated with biofilm. Packets of disks rotate in the direction of fluid movement by gear electric drives 5. The fluid in each cell is aerated by compressed air by means of aerators 7.

Due to the processes occurring between the contaminants contained in the effluent and the biofilm on the discs, wastewater is treated. It is essential that + is connected to the rotating discs +

direct current, and to the comb of graphite rods located in the interdisk space -. As a result of electrolysis, oxygen will be released on the surface of the disks, immediately absorbed by the biofilm located on the surface of the disks. Such an effect stimulates the functioning of cells, their metabolic activity is significantly increased, which can significantly increase the productivity of the device, or reduce the dimensions of the device at a constant productivity. In addition, the cleaning ability is increased at significant concentrations of pollution. Hydrogen released on graphite electrodes promotes the release of fats from the treated wastewater. Almost all of the oxygen released is completely absorbed by the cells. In addition, it stands out in the very

active form, which further contributes to the cleaning effect. The cleaned drains from the tray 1 are sent for final cleaning to the secondary sump 3, from which they are discharged from the device through the cuvette 9. Of

sedimentation tanks 2 and 3 periodically remove sediment through pipes connected at the bottom level.

Tests of the device showed a high oxidative power for organic pollution and an increase in the effect

Claims (1)

cleaning up. Electrical safety is ensured by the low required voltage of 6-12 volts DC, which is sufficient to ensure the operation of the device. The device according to the invention allows water to be supplied with a concentration of more than 6.0 mg / l. The intensity of the process is controlled by current, voltage and frequency of current supply over time. SUMMARY OF THE INVENTION A wastewater treatment apparatus comprising a container with installed 0 biofilters from disks mounted on horizontal shafts with electric rotation drives, characterized in that, in order to increase the cleaning efficiency and productivity of the device, it is equipped with a constant current source with a positive electrode in the form of sliding contacts interacting with the biofilter disks and a negative electrode in in the form of graphite rods arranged between biofilter disks.